MESON Chess Problem Database
Problem Display
PID: 56590 (1B2K3/3pp3/r3k1pn/4P2R/6P1/1PNR4/3N2B1/2Q4q w - - 0 1)
Witt, Andreas
Die Schwalbe, 2004
#2
11 + 7
SOLUTION
- SOUND
- Sets
- 1...Qxc1
- 2.Bd5#
- 1...Qd1
- 2.Bd5#
- 1...Qe1
- 2.Bd5#
- 1...Qf1
- 2.Bd5#
- 1...Qg1
- 2.Bd5#
- 1...Qh2
- 2.Bd5#
- 1...Qh3
- 2.Bd5#
- 1...Qh4
- 2.Bd5#
- 1...Qxh5
- 2.Bd5#
- 1...Qxc1
- Tries
- 1.Sf3?
- threat
- 2.Sd4#
- 2.Sg5#
- 1...Qxc1
- 2.Sd4#
- 1...Qxh5
- 2.Sd4#
- 1...Sxg4
- 2.Sd4#
- 1...Qg1
- 2.Sg5#
- 1...Qh4
- 2.Sd4#
- 1...Ra4
- 2.Sg5#
- 1...Sf5
- 2.Sg5#
- 1...Sf7
- 2.Sd4#
- 1...g5
- 2.Sd4#
- 2.Sxg5#
- 1...d6
- 2.Sd4#
- 1...Rd6!
- threat
- 1.Sde4?
- threat
- 2.Sc5#
- 2.Sg5#
- 1...Qxc1
- 2.Sc5#
- 1...Qxh5
- 2.Sc5#
- 1...Sxg4
- 2.Sc5#
- 1...Qg1
- 2.Sg5#
- 1...Qh4
- 2.Sc5#
- 1...Ra5
- 2.Sg5#
- 1...Rc6
- 2.Sg5#
- 1...Rd6
- 2.Sc5#
- 1...Sf7
- 2.Sc5#
- 1...g5
- 2.Sc5#
- 2.Sxg5#
- 1...d6!
- threat
- 1.Se2?
- threat
- 2.Sd4#
- 2.Sf4#
- 1...Qxg2
- 2.Sf4#
- 1...Qf1
- 2.Sd4#
- 2.Bd5#
- 1...Qg1
- 2.Sf4#
- 2.Bd5#
- 1...Qh2
- 2.Sd4#
- 2.Bd5#
- 1...Rd6
- 2.Sf4#
- 1...Sf5
- 2.Sf4#
- 1...g5
- 2.Sd4#
- 1...Ra4!
- threat
- 1.Sb5?
- threat
- 2.Sd4#
- 2.Sc7#
- 1...Qxg2
- 2.Sc7#
- 1...Qxc1
- 2.Sd4#
- 2.Bd5#
- 1...Qxh5
- 2.Sd4#
- 2.Bd5#
- 1...gxh5
- 2.Sd4#
- 1...Qg1
- 2.Sc7#
- 2.Bd5#
- 1...Ra4
- 2.Sc7#
- 1...Rc6
- 2.Sd4#
- 1...Rd6
- 2.Sc7#
- 1...Ra7
- 2.Sd4#
- 1...g5
- 2.Sd4#
- 1...Sf5!
- threat
- 1.Sd5?
- threat
- 2.Sf4#
- 2.Sc7#
- 1...Qxc1
- 2.Sf4#
- 1...Qxh5
- 2.Sf4#
- 1...gxh5
- 2.Sf4#
- 1...Qf1
- 2.Sc7#
- 1...Qh2
- 2.Sc7#
- 1...Ra4
- 2.Sc7#
- 1...Rc6
- 2.Sf4#
- 1...Ra7
- 2.Sf4#
- 1...Sf5
- 2.Sf4#
- 1...g5!
- threat
- 1.Sf3?
- Keys
- 1.Sce4!
- threat
- 2.Sc5#
- 2.Sg5#
- 1...Qxc1
- 2.Sg5#
- 1...Qxh5
- 2.Sc5#
- 1...Sxg4
- 2.Sc5#
- 1...Qg1
- 2.Sg5#
- 1...Qh4
- 2.Sc5#
- 1...Ra5
- 2.Sg5#
- 1...Rc6
- 2.Sg5#
- 1...Rd6
- 2.Sc5#
- 1...Sf7
- 2.Sc5#
- 1...g5
- 2.Sc5#
- 2.Sxg5#
- 1...d6
- 2.Qc8#
- threat
- 1.Sce4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 6
- REMOVED MATES = 5
- Sets
- Q(a);N_GUARD,XQ(A)::B(C)
- Q(a);N_GUARD::B(C)
- Q(a);N_GUARD,XR(I)::B(C)
- Tries
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(A)::S(B)
- Q(a);XR(I)::S(B)
- S(e);XP(G)::S(B)
- Q(a);::S(B)
- R(b);::S(B)
- S(e);::S(B)
- P(f);::S(B)
- Refutation
- R(b);
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(A)::S(B)
- Q(a);XR(I)::S(B)
- S(e);XP(G)::S(B)
- Q(a);::S(B)
- R(b);::S(B)
- S(e);::S(B)
- Refutation
- P(f);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(a);XB(C)::S(E)
- R(b);::S(E)
- S(e);::S(E)
- P(d);::S(E)
- Refutation
- R(b);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(a);XB(C)::S(E)
- P(d);XR(I)::S(E)
- R(b);::S(E)
- P(d);::S(E)
- Refutation
- S(e);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(A)::S(E)
- Q(a);XR(I)::S(E)
- P(d);XR(I)::S(E)
- Q(a);::S(E)
- R(b);::S(E)
- S(e);::S(E)
- Refutation
- P(d);
- Try
- Actual
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(A)::S(E)
- Q(a);XR(I)::S(E)
- S(e);XP(G)::S(E)
- Q(a);::S(E)
- R(b);::S(E)
- S(e);::S(E)
- P(f);OGATEB::QAB(A)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).